Membership
Tour
Register
Log in
Hiroko Hanzawa
Follow
Person
Shiroishi, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Objective lens for optical memory device
Patent number
4,925,283
Issue date
May 15, 1990
Alps Electric Co., Ltd.
Ichiro Morishita
G02 - OPTICS
Information
Patent Grant
Collimating lens for use in optical memories
Patent number
4,904,062
Issue date
Feb 27, 1990
Alps Electric Co. Ltd.
Ichiro Morishita
G02 - OPTICS